<template>
    <div class="login_container">
        <div class="login_box">
            <!-- 头像区域 -->
            <div class="avatar_box">
                <img src="../assets/logo.png" alt="">
            </div>
            <!-- 表单区域 -->
            <el-form ref="loginFormRef" class="login_form" :model="loginForm" :rules="loginFormrules">
                <!-- 用户名 -->
                <el-form-item prop="username" >
                    <el-input v-model="loginForm.username"  prefix-icon="iconfont icon-user"></el-input>
                </el-form-item>
                <!-- 密码 -->
                <el-form-item prop="password" >
                    <el-input type="password" v-model="loginForm.password" prefix-icon="iconfont icon-3702mima"></el-input>
                </el-form-item>
                <!-- 按钮区域 -->
                 <el-form-item class="btns">
                    <el-button type="primary" round @click="login">登录</el-button>
                    <el-button type="success" round @click="resetForm">重置</el-button>
                </el-form-item>
            </el-form>
        </div>
    </div>
</template>

<script>
export default {
    
    data(){
        return{
            // 这是登录表单的数据绑定对象
            loginForm:{
                username:'admin',
                password:'123456'
            },
            // 这是表单验证规则对象
            loginFormrules:{
                // 验证用户名
                username:[
                     { required: true, message: '请输入用户名', trigger: 'blur' },
                     { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
                ],
                // 验证密码
                password:[
                     { required: true, message: '请输入密码', trigger: 'blur' },
                    { min: 3, max: 10, message: '6-15之间的字符', trigger: 'blur' }
                ]
            }
        }
    },
    methods:{
        // 点击充值按钮，充值表单
       resetForm() {
           this.$refs.loginFormRef.resetFields();
       },
       login() {
           this.$refs.loginFormRef.validate(async (valid)=>{
            //    console.log(valid);

            if(!valid) return;
            const result = await this.$http.post("login",this.loginForm);
            let res = result.data;
            console.log(res);
            if(res.meta.status !==200) return this.$message.error("登录失败！");
            this.$message.success("登录成功");
            // 1．将登录成功之后的 token，保存到客户端的sessionStorage中
                //1.1项目中出了登录之外的其他API接口，必须在登录之后才能访问
                //1.2 token只应在当前网站打开期间生效，所以将token保存在sessionStorage中console.log(res); I
                window.sessionStorage.setItem('token',res.data.token);
            //2．通过编程式导航跳转到后台主页，路由地址是/home
            this.$router.push("/home");

          })
       }
    }
    
}
</script>
<style lang="less" scoped>
.login_container{
    background-color: #2b4b6b;
    height: 100%;
}
.login_box {
    width: 450px;
    height: 300px;
    background-color: #fff;
    border-radius: 3px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%,-50%);

    .avatar_box {
        height: 130px;
        width: 130px;
        border: 1px solid #eee;
        border-radius: 50%;
        padding: 10px;
        box-shadow: 0 0 10px #ddd;
        position: absolute;
        left: 50%;
        transform: translate(-50%,-50%);
        background-color: #fff;
        img{
            width: 100%;
            height: 100%;
            border-radius: 50%;
            background-color: #eee;
        }
    }
}
.btns {
    display: flex;
    justify-content: flex-end;
}
.login_form {
    width: 100%;
    bottom: 0;
    position: absolute;
    padding: 0 20px;
    box-sizing: border-box;
}
h1 {
    font-size: 10px;
}
</style>